CHAPEL HILL - Preseason or exhibition, whatever you want to call it, North Carolina used Wednesday’s basketball game with St. Augustine’s as a public unveiling.

And there’s plenty to see in the fourth and deepest version of Roy Williams’ Tar Heels.

There are shiny new post players, speedy new guards, a new-but-old fullcourt press and the same old Tyler Hansbrough. The whole menagerie was display on Wednesday in the Tar Heels’ 110-79 win over St. Aug’s.

UNC used a 13-player rotation, rolling one after another off the bench, with Williams often shuttling in five subs at a time, unit by unit overwhelming the Division II Falcons.

Williams said he wouldn’t use the same substitution pattern during the season, he just wanted to get as many players in the game as possible. Beside, Williams said, he only makes wholesale five-at-a-time subs when he’s “really ticked.”

There was no reason to be mad on Wednesday, particularly not with forward Brandan Wright, the only UNC freshman to start, who led the Heels with 19 points, 15 coming in an impressive yet disjointed first half by the home team.

Wright, with his long, lean 6-foot-9 frame, twisted and soared his way in a dunk-a-thon, as UNC’s fullcourt press systematically changed turnovers into points.

“It’s amazing what he can do when you just get him the ball,” UNC’s Danny Green said of Wright.

Wright, a lefty, collected 10 points, on four dunks, in the first 4:32 of the game. He saved his best dunk with a one-handed flush of an alley-oop from Marcus Ginyard at 9:01 in the first half.

Wright’s production slowed, but not the Heels’ pressure. The Heels forced 25 turnovers, 17 in the first half, with their fullcourt press, a throwback to Dean Smith’s best teams but has been moth balls since the program lacked the sufficient depth to implement the pressure system properly.

“We want to speed the game up,” Williams said, targeting 100 possessions per game as a team goal (unofficially they has 101 on Wednesday).

Even with only one preseason game as evidence, it’s clear Carolina will have the bodies to press and run at will.

There’s new big guys Alex Stepheson, Deon Thompson and the new quick guys, Ty Lawson and Wayne Ellington. In all, the six freshmen combined for 55 of the Tar Heels’ points.

With all of the freshmen production, there was little room for Hansbrough, who still scored 14 points but only attempted four shots. He did manage to one-up Wright’s big dunks with a reverse two-hander in the second half.

At least to start the season, the young guys will watch the returnees, with Bobby Frasor and Wes Miller starting at the guards and Reyshawn Terry joining Hansbrough (14 points) in the frontcourt.

The only player missing from last season’s overachieving second-place ACC team was David Noel, and Wright’s wearing his familiar number of 34.

While Frasor and Miller started, the raw talent of Lawson and Ellington was evident with each jab-step dribble by Lawson and sweet jumper by Ellington.

Ellington scored 12 points on 6-of-8 shooting and showed signs of being able to hit an outside shot, an element missing from last year’s team. Lawson added nine points with five assists in 15 minutes.

The night was not all sunshine and roses for the Heels. The Falcons scored 79 points, even with the increased number of possessions caused by UNC’s tempo, an alarming number for Division II team against the second-ranked team in the ESPN Top 25.

Also, the Falcons finished the first half with the same number of rebounds, 18, as the much taller and deeper Tar Heels.

And perimeter defense, a bugaboo that sent UNC home last March in the second round of the NCAA Tournament, showed signs of vulnerability as St. Aug’s guards Antonio Fitzgerald (27 points) and Barry Jones (18) combined for 45 points, including 25 in the first half.

The Falcons actually made it a 12-point game, 39-27, with 5:23 left in the first half on Fitzgerald’s free throw.

Then, in a blink, Ginyard, the 11th-man, scored four of 11 first-half points and the Heels went back into cruise control.